I have seen 2 neurologist. I was dx with PN also and RSD. My one neurologist really did every dx test possible to rule out other conditions. So I had a few mris,emg/nc,dopplers,I could go on. He also worked with meds for me as well. I don't have internal but have severe eye and ear pain that they think is rsd now but my neuro also dx tested for things for that issue and not just my limbs. I think you should go to one if at all possible. I know my last pain doctor was saying how some docs will brush something off as rsd and it may not be. I am not saying you don't have rsd but you may have another condition too. Feel better